Process for the milling of rice



May 27, 1924. 1,495,561

G. M. MILES PROCESS FOR THE MILLING OF RICE Filed March 2O 1919 /5 l il 'EEEEEPLMEE .Patented lvlay 27, lge@ GEORGIE LI. MILES, 0F HOUSTON, TEXAS, ASSIGNR OF ONE-HALF COMPANY,` INC., 0F HGUSTONVTEXS.

T0 STANDARD RICE PROCESS FOR THE MILLING 0F RICE.

Application filed March 20, 1919. Serial No. 283,690.

To all 'ui/wm 2t muy concern.'

Be it known that I, GEORGE M. Mmes, a citizen of the United States, residing at Houston, in the county of Harris and State of Texas, have invented a new and useful Process for the Milling of Rice, of which the following is a specification.

rlhe invention relates to certain new and useful improvements in processes for the milling of rice and pertains more particularly to that art in which the rice is treated to remove the bran or cellular material be fore subjecting it to final treatment whereby it is fitted for the market.y lt has for its main object to insure a thorough removal of bran or cellular material from the rice While being passed through a series of cooperatingl means whereby the hulls or liber is mechanically separated from the rice kernel and this bran or cellular matter then pneumatically removed.

A further object of the invention is the application of the variable air suction to' each huller, thus maintaining absolute control and preventing any Waste of rice.-

importance is attached to the pneumatic system in that it eliminates the use ot Wire mesh rotary reels which are used at present and are a source of continual Waste, dissatisfaction and always a burdensome expense.

A. further object of the invention is the provision of an improved process for the milling` of rice which embodies hullers to loosen or lorealr the braln from the kernel,

e@ and a series of aspirators wherein the braninay be effectively segregated from the rice kernels in such marmer that the kernels will not be broken yor discharged `with the bran.

@their objects and advanta 'es of this invention will be apparent during the course of the following; detailed description. the accompanying drawing, the vieuT diegrammatically represents the improved process alter the manner lmovvn to those skilled in the art as a milling program.

lt being understood that the process is solely designed for the complete removal all bran or cellular material without the use rotary screen which becomes clogged worn, and is a continual source of in convenience 'and irregularities, the process comprises the rst A-A uid second C--JG hullers in connecvvith double aepirators and LU-D of any standard type, all operating under a suction device so arranged as to pneumatically transfer all such dust, bran or cellular material through a suitable dust collector 22 and into a proper receiving box connected to conveyor 16. l

The irst,brealr hullers are `connected to suction tunnels 3,`and 4 so set Within the top of these hullers Ai-A as to gently remove the bran or cellular matter directly as it is `broken from -the grain, Without/conveying .double aspirators B and Bfwhichexpose the grain toa thorough cleaning by reason of the spreading of the stock, by the vibrating or rotary lmotion of the trays contained therein and permitting the free action of the air drawn by aspiratingf fan 2l through the branch pipes 6 and 7 Which may also he provided vvith valves 6 and 7' respectively. rlhis air lifts the 'bran and dust Within the shaft 26 and deposits it, through the dust collector 22, into a receiving box connected to conveyor lo. v

The rice is then passed through shalt 8 into second break hullers (l, C" Which are provided in the same Way as rst break hullers A, Af with suction tunnels 9, l0 valve controlled as at 9 and l0F respectively, vvhic'h remove any loosened bran and convey it up shalt il to aspirating fan 21, thence through 4dustcollector 22 and finally into a receiving bor; connected 'to conveyor 16. This operation leaves the rice comparatively `free from all bran or cellular matter and for .final cleaning the grains are conveyed through shaft 12 into tvvo aspirators D, D which continue the removal of all bran and 'cellular material in an identical manner to :ispiratore B, B. The

air drawing4 the Waste bran through shafts l and lll, valve controlled as at 13 and la respectively, into 'the main shaft 26 and then through the previously outlined course into a receiving boa connected to conveyor 'lll lll@

L@ nua-easel 16. rlhe cleaned rice is discharged from asdependent of the huller. where the bran is pirator D into a pipe 15 and thence transremoved from the rice at a predetermined ferred to sacks or other suitable receivers. suction.

The double aspirators B, BD, D prefs 3. rllhat process of milling rice which c onerably of the revolving disc type,l remove sists in passing the rice through a hulling in their operation, any bran or cellular matunit to loosen the bran therefrom, subjectter too heavy to be carried bythe countering the rice Within the hulling unit to pneubalanced air currents through the shafts matic action to partially remove the bran 26 to the conveying pipe 23, and these therefrom, and passing the rice to an heavy waste particles are transferred by aspirating unit to remove the remaining gravity through the shafts 17,' 18, 19, 20 to bran therefrom. the conveying pipe 23 and thence into re- 4. 'llhat process of milling rice which conceiver connected to conveyor 16. sists in subjecting the Arice to a hulling ac- The term aspirator as used in this specition to loosen the bran therefrom, passing cation andthe claims is to be limited to the rice from the huller to an aspirator, the type of mechanism designated by the passing the rice from the aspirator to a sectrade as such, and is to be sharply distin ond huller to further loosen the bran from guished from the Well known rice bran reels. the rice, and passing the rice from the sec- 'lhe inlet of theaspirating fan'21 is conond huller to a second aspirator. nected to lthe shaft 27, providing suction 5. rll`hat process of milling rice which conto shafts 28 and 26. rlllhe discharge trunk sists in subjecting the rice to a hulling ac- 29 leads lfrom the outlet of the fan 22 to a tion to loosen the bran therefrom, passing dust collector 22 arranged with aconveying the rice from the huller to an aspirator, pipe 23'for the waste from the mill which passing the rice from the aspirator to a is collected in receiver connected to consecond huller to further loosen the bran veyor 16. from the rice, and passing the rice from the llt will be understood that although only Asecond huller to a second aspirator, said one as iragting flan is shown in this form, inrice and the bran therewith bemg Sublretd depen ent fans may be provided at various to predetermined suctions in the rst and places in the ducts 11, 5 or 26 as for ex- .Second mentioned hullers to partially segreample it has been found well to insert a gate the bran from the rice kernels. fan at point 23. These fans may then be 6. That process of milling rice which conindependently controlled and any desired sists in consecutively assing the rice draft thereby obtained. ln practice it is through a huller to brea the bran there also very satisfactory to use a fan in duct from, a series of aspirators` to partially re- 11 at a point just beyond the junction of move the bran from the rice kernels, a secducts leading ,from suction funnels 9 and ondhuller to break the remaining bran from 10, and another fan `inl duct 5l at a ointv the flrice kernels, and a second series of just beyond the junction of the ducts Veadasp-irators to segregate the remaining-'bran mg from suction tunnels 3 and el.' .These from the rico kernelsfans relieve the loadonan 2l and pro- 7. 'llhat process of-milling rice which conduce .a more positive draft through irst sists in consecutively passing the rice break hullers Ai--A and second hullers through a huller to break the bran there- C-- from, a series of aspirators to partially re- While. the form 'of the invention is be@ move the bran from the rice kernels, a seclieved to loe the preferable embodiment `ond huller to break the remaining bran from thereof, 1t is nevertheless understood that the rice kernels, and a Second Series oit asminor changes maybe made therein, and pirators to segregate `the remaining bran that various rearrangements of the supply from the rice kernels, said rice and the bran or air ducts may be made without depart mixed therewith being .subjected to prede il ing from the spirit and scope of the inven termined suction within' the .tiret and second tion as claimed.

ll claim:

l. Those steps ih the process of milling rice which consists in first partially removing the bran from the grain and during said action carrying on" loose bran, cellular material and dust by a current of air, and then spreading and agitating the rice during said action carrying of-" loosened bran, celiularniaterial dust by a current of air.

n Q hat pro oimilling rice which consists in passin 'ce through a huller to the bra from, passing the a e to aspiraterv inmentioned hullers to ysegregate the bran therefrom.

8. That process or milling rice which censists in subjecting the rice to action within l hullers having a relatively strong suction therein to break the bran from the rice kernel and partially segregate the bran from the kernel, and passing the rice fron ,the hullers through a plurality oi? aspirator.; i"

the second huller to a second aspirating ac tion wherein the rice is subjected to gentle action under light suction for segregatlon of bran from the kernels.

10. That process of milling rice which consists in passing the cargo rice through a huller under break and partial y segregate the bran from the kernels of the rice, passing the rice from the huller to an aspirator wherein the bran is subjected to light predetermined suction for segregation of the bran from the rice kernels, passing the rice from the aspirator to a second huller to loosen and partially segregate the bran from the rice kernels, and passing the remaining rice to a second aspirator wherein, under predetermined light suction, the remaining bran is segregated from the rice kernels.

GEoRGE M. MILES.

redetermined suction to n 

